Question

Can the children have the sugar, please?

Yes, they can
No, they have
Yes, they have
No, they can.
Yes, the children

Answer 1

Respuesta:

Yes, they can

Explicación:

El auxiliar es "can", y de haber sido negativa la respuesta llevaría "can't (can not)"

Answer 2

Yes, they can

I hope it helps you